(3GdSjWQI GdUgjhfjI Ydi hSGFd GdGYdGe GdYGdejI (B/ s - (3RjGO GHh ZfjeIs ([S.N] : (3OGQ YeGf ddfTQ hGdJhRjY , s, 1984)
Keywords: (3GdYGde GdYQHis; (3GdhdGjGJ GdeJMOI GdGeQjcjIs; (3GdUgjhfjIs; (3GdUMGaIs; (3hSGFd GdGYdGes; (3GhQHGs